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View Filing in HTMLView Filing in RTFView Filing in PDFView Filing in ExcelView Filing in Original Format  SC 13G/A   GSE SYSTEMS INC" (NEEDHAM INVESTMENT MANAGEMENT LLC)  02/14/24   File this document to a folder.
View Filing in HTMLView Filing in RTFView Filing in PDFView Filing in ExcelView Filing in Original Format  SC 13G/A   GSE SYSTEMS INC" (LIND GLOBAL FUND II LP)  02/13/24   File this document to a folder.
View Filing in HTMLView Filing in RTFView Filing in PDFView Filing in ExcelView Filing in Original Format  SC 13G/A   GSE SYSTEMS INC" (NGP ENERGY TECHNOLOGY PARTNERS II, L.P.)  02/09/24   File this document to a folder.
View Filing in HTMLView Filing in RTFView Filing in PDFView Filing in ExcelView Filing in Original Format  SC 13G/A   GSE SYSTEMS INC" (NEEDHAM INVESTMENT MANAGEMENT LLC)  02/14/23   File this document to a folder.
View Filing in HTMLView Filing in RTFView Filing in PDFView Filing in ExcelView Filing in Original Format  SC 13G/A   GSE SYSTEMS INC" (NEEDHAM INVESTMENT MANAGEMENT LLC)  02/14/22   File this document to a folder.
View Filing in HTMLView Filing in RTFView Filing in PDFView Filing in ExcelView Filing in Original Format  SC 13G/A   GSE SYSTEMS INC" (POLAR ASSET MANAGEMENT PARTNERS INC.)  02/09/22   File this document to a folder.
View Filing in HTMLView Filing in RTFView Filing in PDFView Filing in ExcelView Filing in Original Format  SC 13G/A   GSE SYSTEMS INC" (NEEDHAM INVESTMENT MANAGEMENT LLC)  02/16/21   File this document to a folder.
View Filing in HTMLView Filing in RTFView Filing in PDFView Filing in ExcelView Filing in Original Format  SC 13G/A   GSE SYSTEMS INC" (POLAR ASSET MANAGEMENT PARTNERS INC.)  02/09/21   File this document to a folder.
View Filing in HTMLView Filing in RTFView Filing in PDFView Filing in ExcelView Filing in Original Format  SC 13G/A   GSE SYSTEMS INC" (PVAM PERLUS MICROCAP FUND, L.P.)  02/05/21   File this document to a folder.
View Filing in HTMLView Filing in RTFView Filing in PDFView Filing in ExcelView Filing in Original Format  SC 13G/A   GSE SYSTEMS INC" (PVAM PERLUS MICROCAP FUND, L.P.)  02/14/20   File this document to a folder.
View Filing in HTMLView Filing in RTFView Filing in PDFView Filing in ExcelView Filing in Original Format  SC 13G/A   GSE SYSTEMS INC" (NEEDHAM INVESTMENT MANAGEMENT LLC)  02/14/20   File this document to a folder.
View Filing in HTMLView Filing in RTFView Filing in PDFView Filing in ExcelView Filing in Original Format  SC 13G/A   GSE SYSTEMS INC" (NGP ENERGY TECHNOLOGY PARTNERS II, L.P.)  02/13/20   File this document to a folder.
View Filing in HTMLView Filing in RTFView Filing in PDFView Filing in ExcelView Filing in Original Format  SC 13G/A   GSE SYSTEMS INC" (SILVER JACK)  05/08/19   File this document to a folder.
View Filing in HTMLView Filing in RTFView Filing in PDFView Filing in ExcelView Filing in Original Format  SC 13G/A   GSE SYSTEMS INC" (SILVER JACK)  02/14/19   File this document to a folder.
View Filing in HTMLView Filing in RTFView Filing in PDFView Filing in ExcelView Filing in Original Format  SC 13G/A   GSE SYSTEMS INC" (NGP ENERGY TECHNOLOGY PARTNERS II, L.P.)  02/14/19   File this document to a folder.
View Filing in HTMLView Filing in RTFView Filing in PDFView Filing in ExcelView Filing in Original Format  SC 13G/A   GSE SYSTEMS INC" (PVAM PERLUS MICROCAP FUND, L.P.)  02/14/19   File this document to a folder.
View Filing in HTMLView Filing in RTFView Filing in PDFView Filing in ExcelView Filing in Original Format  SC 13G/A   GSE SYSTEMS INC" (NEEDHAM INVESTMENT MANAGEMENT LLC)  02/14/18   File this document to a folder.
View Filing in HTMLView Filing in RTFView Filing in PDFView Filing in ExcelView Filing in Original Format  SC 13G/A   GSE SYSTEMS INC" (PVAM PERLUS MICROCAP FUND, L.P.)  02/13/18   File this document to a folder.
View Filing in HTMLView Filing in RTFView Filing in PDFView Filing in ExcelView Filing in Original Format  SC 13G/A   GSE SYSTEMS INC" (SILVER JACK)  02/13/18   File this document to a folder.
View Filing in HTMLView Filing in RTFView Filing in PDFView Filing in ExcelView Filing in Original Format  SC 13G/A   GSE SYSTEMS INC" (S SQUARED TECHNOLOGY, LLC)  03/31/17   File this document to a folder.
View Filing in HTMLView Filing in RTFView Filing in PDFView Filing in ExcelView Filing in Original Format  SC 13G/A   GSE SYSTEMS INC" (SILVER JACK)  02/27/17   File this document to a folder.
View Filing in HTMLView Filing in RTFView Filing in PDFView Filing in ExcelView Filing in Original Format  SC 13G/A   GSE SYSTEMS INC" (PVAM PERLUS MICROCAP FUND, L.P.)  02/10/17   File this document to a folder.
View Filing in HTMLView Filing in RTFView Filing in PDFView Filing in ExcelView Filing in Original Format  SC 13G/A   GSE SYSTEMS INC" (S SQUARED TECHNOLOGY, LLC)  02/10/16   File this document to a folder.
View Filing in HTMLView Filing in RTFView Filing in PDFView Filing in ExcelView Filing in Original Format  SC 13G/A   GSE SYSTEMS INC" (S SQUARED TECHNOLOGY, LLC)  02/18/15   File this document to a folder.
View Filing in HTMLView Filing in RTFView Filing in PDFView Filing in ExcelView Filing in Original Format  SC 13G/A   GSE SYSTEMS INC" (SILVER JACK)  02/09/15   File this document to a folder.
 
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